Sky High Castle

the United States

Skånelaholm Castle

Sweden

Museum

Skępe

Poland

Slanec Castle

Slovakia

Slangenburg Castle

the Netherlands

Sleeping Beauty Castle

the United States

Slimnic

Romania

Slon

Romania

Slot Assumburg

the Netherlands

Slot Heemstede

the Netherlands

Slot Teylingen

the Netherlands

Slotje Limburg

the Netherlands

Slovenská Ľupča Castle

Slovakia

Slunj Castle

Croatia

Smajilagić's Citadel, Upper Town

Bosnia and Herzegovina

Small Castle

Hungary

Small Castle

the Netherlands

Smalyany Castle

Belarus

Smar Jbeil

Lebanon

Smbataberd

Armenia

Exterior fortification walls, towers and the keep are still intact · Fortress

Smederevo Fortress

Serbia

Partially restored

Smedstorp Castle

Sweden

Private residence

Smithsonian Castle

the United States

Smolajny

Poland

Smolec

Poland

Smolenice Castle

Slovakia

Smolensk Kremlin

Russia

Smoleń

Poland

Snogeholm Castle

Sweden

Hotel

Soave

Italy

Sobień Castle

Poland

Sochaczew

Poland

Socolari

Romania

Sofiero Castle

Sweden

Museum

Soko Fort

Bosnia and Herzegovina

Soko Grad

Serbia

Ruins